Upper/lower, title case, camelCase, kebab-case, snake_case, CONSTANT_CASE, etc. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Sort, deduplicate, remove blank lines, trim each line, reverse line order. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Lines, characters, words, UTF-8 bytes, grapheme clusters. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Count words, characters, lines, and UTF-8 bytes in real time—for essays, blogs, and copy. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Literal or regex replacement with configurable flags. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Split into multiple lines by delimiter, or join lines with delimiter. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Match, groups, and highlight preview. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Line-level difference between two texts (diff). 100% free, runs locally in your browser—nothing is uploaded to our servers.

Generate Latin placeholder paragraphs. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Convert title to URL-friendly slug. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Caesar cipher shift 13 (applying twice restores original). 100% free, runs locally in your browser—nothing is uploaded to our servers.

Strip tags via DOMParser and extract visible text. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Add spaces or tabs before each line, or strip leading whitespace. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Ascending/descending and natural sort (numbers by value). 100% free, runs locally in your browser—nothing is uploaded to our servers.

Add sequential numbers with width and custom separator. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Re-wrap paragraphs at given character width (UTF-16 count). 100% free, runs locally in your browser—nothing is uploaded to our servers.

Convert Chinese characters to Pinyin. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Convert between Simplified and Traditional Chinese. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Mask sensitive information with custom keep positions. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Browse, search, and copy emojis by category. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Chinese synonym/antonym lookup with built-in dictionary. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Generate numeronyms like i18n, l10n, a11y. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Convert text to ASCII art banner. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Automatically add spaces between CJK and half-width characters. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Use { { variable } } syntax with auto-detection and batch fill. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Defang URLs for safe sharing, with refang support. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Detect platform-prohibited words, built-in word list. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Scrollable text teleprompter with mirror mode. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Decompose Chinese characters into radicals. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Batch generate URLs from template and parameters.

Filter/truncate/pad text lines by length.

Read text aloud using browser SpeechSynthesis API.

Convert between Chinese full-width and English half-width punctuation. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Reverse text at character level or line level. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Paste CSV or TSV text, auto-detect delimiter, convert to HTML table code. 100% free, runs locally in your browser—nothing is uploaded to our servers.

Browse and copy special symbols organized by categories: math, arrows, Greek, currency, and more. 100% free, runs locally in your browser—nothing is uploaded to our servers.